'Under circumstances of small numbers of observastions (i.e., medium wtc overflights), the ETS framework can make negative forecasts, so recode for this. This is very rare, just check for it {%series1}_{%series2}_ets_f = @recode({%series1}_{%series2}_ets_f <0,0,{%series1}_{%series2}_ets_f )

'Make an actual series that is only for the forecast period genr {%series1}_{%series2}_ets_a = {%series1}_{%series2}_n delete forecast smpl @all